Remove the ladybirds from the playing field, connecting them
horizontally or vertically, in the same colour.
In order to remove the ladybirds, you must connect at least three of them.
If you connect more of them, you will gain a bonus.
Rainbow butterfly works as a*joker and can replace ladybird of any colour.
Deaths head works in the same manner but has one more function: If you use it well,
it will remove all ladybirds of the same colour on the playing field.
At each wrong move, new ladybirds will be born.
Be careful! If the playing field fills up with ladybirds, you lose.